[1f4adec] | 1 | /* |
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| 2 | |
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| 3 | Copyright 2012-2014 Adam Reichold |
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| 4 | |
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| 5 | This file is part of qpdfview. |
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| 6 | |
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| 7 | qpdfview is free software: you can redistribute it and/or modify |
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| 8 | it under the terms of the GNU General Public License as published by |
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| 9 | the Free Software Foundation, either version 2 of the License, or |
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| 10 | (at your option) any later version. |
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| 11 | |
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| 12 | qpdfview is distributed in the hope that it will be useful, |
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | GNU General Public License for more details. |
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| 16 | |
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| 17 | You should have received a copy of the GNU General Public License |
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| 18 | along with qpdfview. If not, see <http://www.gnu.org/licenses/>. |
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| 19 | |
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| 20 | */ |
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| 21 | |
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| 22 | #ifndef PAGEITEM_H |
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| 23 | #define PAGEITEM_H |
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| 24 | |
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| 25 | #include <QCache> |
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| 26 | #include <QGraphicsObject> |
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| 27 | #include <QIcon> |
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| 28 | #include <QSet> |
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| 29 | |
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| 30 | class QGraphicsProxyWidget; |
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| 31 | |
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| 32 | #include "renderparam.h" |
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| 33 | |
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| 34 | namespace qpdfview |
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| 35 | { |
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| 36 | |
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| 37 | namespace Model |
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| 38 | { |
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| 39 | struct Link; |
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| 40 | class Annotation; |
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| 41 | class FormField; |
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| 42 | class Page; |
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| 43 | } |
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| 44 | |
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| 45 | class Settings; |
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| 46 | class RenderTask; |
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| 47 | class TileItem; |
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| 48 | |
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| 49 | class PageItem : public QGraphicsObject |
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| 50 | { |
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| 51 | Q_OBJECT |
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| 52 | |
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| 53 | friend class TileItem; |
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| 54 | |
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| 55 | public: |
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| 56 | enum PaintMode |
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| 57 | { |
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| 58 | DefaultMode, |
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| 59 | PresentationMode, |
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| 60 | ThumbnailMode |
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| 61 | }; |
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| 62 | |
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| 63 | PageItem(Model::Page* page, int index, PaintMode paintMode = DefaultMode, QGraphicsItem* parent = 0); |
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| 64 | ~PageItem(); |
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| 65 | |
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| 66 | const QRectF& uncroppedBoundingRect() const { return m_boundingRect; } |
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| 67 | |
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| 68 | QRectF boundingRect() const; |
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| 69 | void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget*); |
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| 70 | |
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| 71 | int index() const { return m_index; } |
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| 72 | |
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| 73 | const QSizeF& size() const { return m_size; } |
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| 74 | |
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| 75 | QSizeF displayedSize() const { return displayedSize(renderParam()); } |
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| 76 | QSizeF displayedSize(const RenderParam& renderParam) const; |
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| 77 | |
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| 78 | const QList< QRectF >& highlights() const { return m_highlights; } |
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| 79 | void setHighlights(const QList< QRectF >& highlights); |
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| 80 | |
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| 81 | RubberBandMode rubberBandMode() const { return m_rubberBandMode; } |
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| 82 | void setRubberBandMode(RubberBandMode rubberBandMode); |
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| 83 | |
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| 84 | bool showsAnnotationOverlay() const { return !m_annotationOverlay.isEmpty(); } |
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| 85 | bool showsFormFieldOverlay() const { return !m_formFieldOverlay.isEmpty(); } |
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| 86 | |
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| 87 | const RenderParam& renderParam() const { return m_renderParam; } |
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| 88 | void setRenderParam(const RenderParam& renderParam); |
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| 89 | |
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| 90 | const QTransform& transform() const { return m_transform; } |
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| 91 | const QTransform& normalizedTransform() const { return m_normalizedTransform; } |
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| 92 | |
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| 93 | QPointF sourcePos(const QPointF& point) const { return m_transform.inverted().map(point); } |
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| 94 | QPointF normalizedSourcePos(const QPointF& point) const { return m_normalizedTransform.inverted().map(point); } |
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| 95 | |
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| 96 | signals: |
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| 97 | void cropRectChanged(); |
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| 98 | |
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| 99 | void linkClicked(bool newTab, int page, qreal left = qQNaN(), qreal top = qQNaN()); |
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| 100 | void linkClicked(bool newTab, const QString& fileName, int page); |
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| 101 | void linkClicked(const QString& url); |
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| 102 | |
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| 103 | void rubberBandStarted(); |
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| 104 | void rubberBandFinished(); |
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| 105 | |
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| 106 | void zoomToSelection(int page, const QRectF& rect); |
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| 107 | |
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| 108 | void wasModified(); |
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| 109 | |
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| 110 | public slots: |
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| 111 | void refresh(bool keepObsoletePixmaps = false, bool dropCachedPixmaps = false); |
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| 112 | |
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| 113 | int startRender(bool prefetch = false); |
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| 114 | void cancelRender(); |
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| 115 | |
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| 116 | protected slots: |
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| 117 | void showAnnotationOverlay(Model::Annotation* selectedAnnotation); |
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| 118 | void hideAnnotationOverlay(bool deleteLater = true); |
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| 119 | void updateAnnotationOverlay(); |
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| 120 | |
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| 121 | void showFormFieldOverlay(Model::FormField* selectedFormField); |
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| 122 | void hideFormFieldOverlay(bool deleteLater = true); |
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| 123 | void updateFormFieldOverlay(); |
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| 124 | |
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| 125 | protected: |
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| 126 | void hoverEnterEvent(QGraphicsSceneHoverEvent*); |
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| 127 | void hoverMoveEvent(QGraphicsSceneHoverEvent* event); |
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| 128 | void hoverLeaveEvent(QGraphicsSceneHoverEvent*); |
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| 129 | |
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| 130 | void mousePressEvent(QGraphicsSceneMouseEvent* event); |
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| 131 | void mouseMoveEvent(QGraphicsSceneMouseEvent* event); |
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| 132 | void mouseReleaseEvent(QGraphicsSceneMouseEvent* event); |
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| 133 | |
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| 134 | void contextMenuEvent(QGraphicsSceneContextMenuEvent* event); |
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| 135 | |
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| 136 | private slots: |
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| 137 | virtual void loadInteractiveElements(); |
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| 138 | |
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| 139 | private: |
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| 140 | Q_DISABLE_COPY(PageItem) |
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| 141 | |
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| 142 | static Settings* s_settings; |
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| 143 | |
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| 144 | Model::Page* m_page; |
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| 145 | QSizeF m_size; |
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| 146 | |
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| 147 | QRectF m_cropRect; |
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| 148 | |
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| 149 | void updateCropRect(); |
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| 150 | |
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| 151 | int m_index; |
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| 152 | PaintMode m_paintMode; |
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| 153 | |
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| 154 | bool presentationMode() const; |
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| 155 | bool thumbnailMode() const; |
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| 156 | |
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| 157 | bool useTiling() const; |
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| 158 | |
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| 159 | QList< QRectF > m_highlights; |
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| 160 | |
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| 161 | // interactive elements |
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| 162 | |
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| 163 | QList< Model::Link* > m_links; |
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| 164 | QList< Model::Annotation* > m_annotations; |
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| 165 | QList< Model::FormField* > m_formFields; |
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| 166 | |
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| 167 | RubberBandMode m_rubberBandMode; |
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| 168 | QRectF m_rubberBand; |
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| 169 | |
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| 170 | void copyToClipboard(const QPoint& screenPos); |
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| 171 | void addAnnotation(const QPoint& screenPos); |
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| 172 | |
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| 173 | void showLinkContextMenu(Model::Link* link, const QPoint& screenPos); |
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| 174 | void showAnnotationContextMenu(Model::Annotation* annotation, const QPoint& screenPos); |
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| 175 | |
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| 176 | // overlay |
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| 177 | |
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| 178 | typedef QMap< Model::Annotation*, QGraphicsProxyWidget* > AnnotationOverlay; |
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| 179 | AnnotationOverlay m_annotationOverlay; |
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| 180 | |
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| 181 | typedef QMap< Model::FormField*, QGraphicsProxyWidget* > FormFieldOverlay; |
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| 182 | FormFieldOverlay m_formFieldOverlay; |
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| 183 | |
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| 184 | template< typename Overlay, typename Element > void showOverlay(Overlay& overlay, const char* hideOverlay, const QList< Element* >& elements, Element* selectedElement); |
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| 185 | template< typename Overlay, typename Element > void addProxy(Overlay& overlay, const char* hideOverlay, Element* element); |
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| 186 | template< typename Overlay > void hideOverlay(Overlay& overlay, bool deleteLater); |
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| 187 | template< typename Overlay > void updateOverlay(const Overlay& overlay) const; |
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| 188 | |
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| 189 | void setProxyGeometry(Model::Annotation* annotation, QGraphicsProxyWidget* proxy) const; |
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| 190 | void setProxyGeometry(Model::FormField* formField, QGraphicsProxyWidget* proxy) const; |
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| 191 | |
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| 192 | // geometry |
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| 193 | |
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| 194 | RenderParam m_renderParam; |
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| 195 | |
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| 196 | QTransform m_transform; |
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| 197 | QTransform m_normalizedTransform; |
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| 198 | QRectF m_boundingRect; |
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| 199 | |
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| 200 | void prepareGeometry(); |
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| 201 | |
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| 202 | QVector< TileItem* > m_tileItems; |
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| 203 | mutable QSet< TileItem* > m_exposedTileItems; |
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| 204 | |
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| 205 | void prepareTiling(); |
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| 206 | |
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| 207 | // paint |
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| 208 | |
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| 209 | void paintPage(QPainter* painter, const QRectF& exposedRect) const; |
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| 210 | |
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| 211 | void paintLinks(QPainter* painter) const; |
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| 212 | void paintFormFields(QPainter* painter) const; |
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| 213 | |
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| 214 | void paintHighlights(QPainter* painter) const; |
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| 215 | void paintRubberBand(QPainter* painter) const; |
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| 216 | |
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| 217 | }; |
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| 218 | |
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| 219 | } // qpdfview |
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| 220 | |
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| 221 | #endif // PAGEITEM_H |
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